After carrying on statistic analysis of the distribution characteristic on international monographs about stem cells,which is collected by MEDLINE,this paper compares and analyzes the number of monographs from 55 countries.

Based on the research experiences of our country and some developed countries in the world,the purpose,process and methods,as well as the function of hydrogeological investigation for sitting disposal repository for high radioactive waste are discussed in this paper.

When hydrogeological investigation be strengthened and combined with geophysics the successful rate of water finding can be increased.

The hydrogeological survey in the Unite States with a history of more than one hundred years is playing a leading role in the world for a long time.

It is a serious threat to mine wealth and personal safety that water gushes from gallery in coalfield exploitation process, so hydrogeological survey is important in coalfield geology exploration.

A new geophysical method to search for water is presented which adopts such technology as indeuced polarization method on the basis of full utilization of results of 1∶50 000 hydrogeological survey and has achieved remarkable economic returns in exploration and exploitation of .

Besides this paper combines the practical work requirements in hydrogeology, deals with the researches and introduces the automatic technique of hydrogeologic thematic map based on the profile image.